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Browsing Process engineering by Issue Date

Browsing Process engineering by Issue Date

Now showing items 1-20 of 125

Adaptive Control Design for a MIMO Chemical Reactor

Yimam, Abubeker (Addis Ababa University, 2004-07)

The major disadvantage of non-adaptive control systems is that these control systems cannot cope with fluctuation in the parameters of the process. One solution to this problem is to use high levels of feedback gain to ...
The Utilization of Indigenous Coal as Energy Substitute in Cement Industry

Dejene, Yoseph (Addis Ababa University, 2004-08)

Ethiopia spends million of dollars to meet its energy requirement, it is estimated around 20-30 million dollars is spent for the purchase of furnace oil for cement sectors only. In order to change the country’s economic ...
Modeling Chemical Engineering Processes Using Artificial Neural Networks

Ambaw, Alemayehu (Addis Ababa University, 2005-01)

In this thesis the application of feed forward type artificial neural networks to model chemical engineering processes are demonstrated with reference to five different problems. Neural network models are constructed ...
Cleaner Production Options for Solid Waste Management in the Leather Industry

Ayalew, Andualem (Addis Ababa University, 2005-01)

The leather industry is characterized as an industry that uses moderately large types and quantities of chemicals and water. The wastes generated in tannery processes include wastewater effluent, solid waste, and hazardous ...
Intrusion Detection System Using Visualization and Integration Technique

Denboba, Sisay (Addis Ababa University, 2006-08)

Intrusion detection is an area of ever increasing importance. Currently existing Intrusion Detection Systems (IDS) lack visualization and false alarms detection capabilities. Researchers have proposed integrated systems ...
Selection of Clay Adsorbents and Determination of The Optimum Condition for Defluoridation of Ground Water in Rift Valley Region

Hassen, Ahmedin (Addis Ababa University, 2007-01)

People in several regions of the Rift Valley of Ethiopia are suffering from skeletal and non-skeletal fluorosis as result of consuming water containing excessive fluoride. Defluoridation of drinking water using variety ...
Analysis of Fillers for Production of Alternative Building Materials Using Magnesia Cement

Tadele, Tamrat (Addis Ababa University, 2008-01)

Fillers, which are available in the country, are essential for the production of magnesia cement boards. These include pumice and lignocellulostic fillers such as bagasse, sawdust and coffee husk. While applying these ...
Composting of Khat and Related Materials as Solid Waste Management Option in Awaday Town

Yusuf, Mahabub (Addis Ababa University, 2008-06)

The huge hip of solid waste has reduced the beauty of the town and became a breeding place of some rodents and vectors. Moreover; the waste encourages some people to dispose more and therefore exacerbates the poor ...
Biosorption of Selected Heavy Metals by Brewery Derived Yeast Biomass

Mesfin, Anteneh (Addis Ababa University, 2009-05)

Waste brewery yeast has been used for biosorption of lead and nickel. The dried, ground and protonated yeast has been contacted with Lead (II) and Nickel (II) solutions so as to investigate impact of PH, Contact time, ...
Optimization of Anaerobic Co-Digestion of Sewege Sludge and Brewery Yeast Waste

Tilahun, Tewodros (Addis Ababa University, 2009-06)

A batch anaerobic digestion experiment was carried out to determine the optimum methane produced from digestion of sewage sludge and brewery yeast waste in different mix, and the fertilizer potential of the sludge after ...
Utilization of Starch from Selected Crops as a Partial Substitute for Barley Malt in Brewing Technology

Admassu, Habtamu (Addis Ababa University, 2009-06)

Brewing process generally involves the steps of malting, mashing and fermentation. The main purpose of malting is the development of amylolytic enzymes in the grain with simultaneous degradation of high molecular substances ...
Two-Dimensional Conservative Contaminant Transport Modeling of the Akaki Wellfield

Seid, Jemal (Addis Ababa University, 2009-11)

This thesis work focuses on non-reactive solute transport modeling of the akaki wellfield for two selected groundwater contaminants (chloride & fluoride) for the 25 operating boreholes administered by Addis Ababa Water ...
Influence of Baking Time and Temperature on the Quality of Kocho Biscuit Enriched with Faba Bean and Wheat

Yohannes, Kalekristos (Addis Ababa University, 2010-06)

The production of nutritious biscuit from Kocho of low protein and high carbohydrate, mineral and crude fiber; fortified with faba bean of high protein and moderate fat content; and wheat of good glutenin and gliadin; ...
Production and Quality Evaluation of Spray Dried Fruit Products

Zeberga, Seifu (Addis Ababa University, 2010-06)

Fruits and fruit products are the enigma of food in modern society. Fresh fruits are perishable and have limited shelf life. To prolong shelf life, various processing and preservation methods such as drying, chemical ...
Production of Biodiesel from Microalgae

Gebeyehu, Menelik (Addis Ababa University, 2010-07)

Since petroleum resources are believed to last only for a few decades, alternative sources of biofuel production should be exploited. In order to replace all the fossil fuels consumed in the world, other sources of ...
Extraction and Characterization of Essential Oil from Margosa Seed

Workneh, Wondesen (Addis Ababa University, 2011-06)

The objective of this study was to develop a process for the extraction of essential oil from Neem seed. The extraction was carried out using soxhlet and agitated mixing vessel extraction units. In the soxhlet extraction ...
Synthesis of Carboxymethyl Cellulose from Sugarcane Bagasse

Woldeamanuel, Yalew (Addis Ababa University, 2011-06)

Sugar cane bagasse is a potential cellulose source, though usually used as a fuel source for the boiler. This work reports concisely on a method to utilize sugar cane bagasse for preparing sodium carboxymethylcellulose ...
Development of supplementary food from blends of maize and soybean flour with moringa powder

Massresha, Erkihun (Addis Ababa University, 2011-06)

The objectives of the study were to develop supplementary foods from moringa, maize and soybeans blend for infants. The sample diets were formulated with different proportion and Faffa was used as a control .Material ...
Optimum Production of Biogas from Bio-Municipal Solid Wastes Using Two Stages Anaerobic Digester

Assefa, Gizachew (2011-06)

Various aspects of Anaerobic Digestion (AD) have been became a promising technology for the management of Municipal Solid Waste. Thus, the objective of this study was to optimize the production of biogas from these wastes ...
Processing Prosopis Juliflora as Cattle Feed: Case Study of Afar Region and Awash River Basin

Haile, Girmaye (Addis Ababa University, 2011-06)

In the Ethiopia, Prosopis juliflora was introduced in the 1970’s by Ministry of Agriculture in the Awash River basin in the Afar National Regional State (ANRS) of Northeast Ethiopia. The plant rapidly invaded vast areas ...

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